The invention belongs to the technical field of flight control system design, and particularly relates to a method and device for determining the deflection angle of a loose floating control surface during an aircraft hydraulic fault. The method comprises the steps that S1, the deviation of a hinge moment actual value and a hinge moment instruction value is calculated according to the hinge moment actual value and the hinge moment instruction value, and the hinge moment instruction value is 0 when hydraulic faults occur; s2, based on a preset integrator, calculating the deviation to obtain a rudder deviation angle; s3, interpolating the rudder deflection angle in a preset hinge moment interpolation table to obtain a hinge moment coefficient; s4, calculating a hinge moment; and S5, taking the calculated hinge moment as a new actual value of the hinge moment, repeating the steps until the deviation converges, and outputting a rudder deflection angle which is the deflection angle of the loose floating rudder surface when the hydraulic fault of the airplane occurs. According to the method, the rudder deflection angle of the fault rudder surface during hydraulic failure can be accurately and quickly calculated, the conditions of insufficient rudder effect and non-instruction movement of an airplane during flight in the air are avoided, and safe flight of the airplane is ensured.
本申请属于飞控系统设计技术领域,特别涉及一种飞机液压故障时松浮舵面偏转角度确定方法及装置。该方法包括:步骤S1、根据铰链力矩实际值与铰链力矩指令值计算两者偏差,其中,当液压故障时,铰链力矩指令值为0;步骤S2、基于预设的积分器,对所述偏差进行计算,获得舵偏角度;步骤S3、对所述舵偏角度在预设的铰链力矩插值表中插值出铰链力矩系数;步骤S4、计算铰链力矩;步骤S5、将计算的铰链力矩作为新的铰链力矩实际值,重复上述步骤,直至偏差收敛,输出舵偏角度即为飞机液压故障时松浮舵面偏转角度。本申请能够精确快速计算液压失效时故障舵面的舵偏角度,避免空中飞行时舵效不够,飞机出现非指令运动情况,确保飞机安全飞行。
Method and device for determining deflection angle of loose floating control surface during hydraulic fault of airplane
一种飞机液压故障时松浮舵面偏转角度确定方法及装置
2024-03-15
Patent
Electronic Resource
Chinese
IPC: | B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
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